Cretaceous of the Trans-Pecos: Effects of Eustacy, Bottom-Water Chemistry, Karsting, and Tectonics on Carbonates and Mudrocks. Day 1

Session Chairs:
Richard Denne, Toti E. Larson, Tingwei Ko

This trip examines the spectacular outcrops exposed in the Trans-Pecos region. The trip focuses on the organic-rich marlstones and limestones of the Boquillas, and includes discussions on OAE2, bottom-water chemistry, fracture patterns and structure, and eustacy, which are compared to the equivalent subsurface Eagle Ford. The trip also examines karsting in the rudist-rich Devil’s River Ls, thickness and stacking patterns of the Del Rio and Buda, and fractures and channels in the Austin Chalk. Hikes are short except for the tour of the Fate Bell Shelter in Seminole Canyon State Park. Cost includes transportation (mini vans), two nights at the Ramada Inn Del Rio (double occupancy), park entrance fees, lunch, snacks, and water.